External lithium battery pack of electromagnetic water meter

Abstract

The utility model discloses an external lithium battery pack of an electromagnetic water meter, and relates to the technical field of measuring instruments, the external lithium battery pack comprises a converter shell, a battery pack body is installed on the side wall of the converter shell, the battery pack body comprises a battery box internally provided with a cavity, and a battery is installed in the cavity. Through cooperative arrangement of structures such as the second waterproof connector and the first waterproof connector, the second waterproof connector is connected with an electrical apparatus element in the converter shell through a wire, and the first waterproof connector penetrates through the wire inlet hole through the wire and then is electrically connected with a battery in the battery box. The second waterproof joint and the first waterproof joint are embedded in the accommodating cavity after being inserted, and the side wall of the accommodating cavity is matched with the side wall of the converter shell for wrapping, so that the second waterproof joint and the first waterproof joint are protected, and the problem that a connecting wire cannot be effectively sealed and protected by an existing battery pack is avoided as much as possible; and after a long time, the connecting line is easy to age or be damaged by animals, so that the user is inconvenient to use.

Description

Technical Field

[0001] The present application relates to the technical field of measuring instruments, and in particular to an external lithium battery pack for an electromagnetic water meter. Background Art

[0002] The external battery pack is a power storage device installed outside the electromagnetic water meter and connected to the electromagnetic water meter to provide external power supply to the electromagnetic water meter. When the electromagnetic water meter is working, it will give priority to using the power of the external lithium battery pack. When the power of the external lithium battery pack is exhausted, it will switch to using the built-in lithium battery of the electromagnetic water meter.

[0003] The utility model patent with announcement number CN211789196U proposes an external lithium battery device for an electromagnetic water meter, which includes a lithium battery opening box, a bottom plate, a lithium battery pack, a super battery, a connecting wire, a connecting wire protection tube and a waterproof connector;

[0004] The lithium battery pack and the super battery are placed in the lithium battery opening box, and the gaps between the lithium battery opening box and the lithium battery pack and the super battery are filled with epoxy resin glue;

[0005] The bottom plate is fixed to the open end of the lithium battery opening box by screws and is used to seal the lithium battery opening box, with two sealing rings or sealants in the middle;

[0006] The lithium battery pack is composed of multiple lithium batteries; the super battery is connected in parallel with the lithium battery pack for use in high current discharge;

[0007] The connecting wire is used to connect to the electromagnetic water meter, and a connecting wire protection tube is provided outside the connecting wire to protect the connecting wire;

[0008] The first end of the connecting wire is connected to the lithium battery pack and the super battery, and the second end of the connecting wire is provided with the waterproof connector; the waterproof connector is used to connect to the second waterproof connector of the electromagnetic water meter, and can provide an external power supply for the electromagnetic water meter.

[0009] The above-mentioned battery pack directly exposes the connecting wires electrically connected to the electromagnetic water meter inside the gap left between the battery pack and the electromagnetic water meter, and the connecting wires cannot be effectively sealed and protected. After a long time, the connecting wires are likely to age or be damaged by rodents, which is inconvenient for users. Utility Model Content

[0010] The purpose of the utility model is to solve or at least alleviate the problem that the existing battery pack cannot effectively seal and protect the connecting wires, which may easily cause the connecting wires to age or be damaged by rodents after a long time, making it inconvenient for users to use.

[0011] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0012] An external lithium battery pack of an electromagnetic water meter comprises a converter housing, a battery pack body is mounted on a side wall of the converter housing, the battery pack body comprises a battery box, a cavity is arranged inside the battery box, a battery is mounted inside the cavity, the battery is electrically connected to an electrical component inside the converter housing through an electrical connector, the battery pack body also comprises an upper cover mounted on an open end of the battery box, a receiving cavity is arranged on a side wall of the battery box close to the converter housing, the electrical connector comprises a wire entry hole arranged on an inner wall of the receiving cavity, the wire entry hole passes through the battery box and is connected to an inner cavity of the battery box, a wire is passed through the inner cavity of the wire entry hole, one end of the wire located in the inner cavity of the battery box is electrically connected to the battery, a first waterproof connector is fixedly connected to one end of the wire located outside the battery box, the electrical connector also comprises a second waterproof connector electrically connected to an electrical component inside the converter housing through a wire, the second waterproof connector is plugged into the first waterproof connector, and the second waterproof connector and the first waterproof connector are embedded in the receiving cavity.

[0013] By adopting the above technical solution, when using, the user first installs the large battery and the small battery at the set position inside the battery box, and then inserts the wire connected to the first waterproof connector into the battery box from the wire entry hole on the back of the battery box, and electrically connects with the large battery and the small battery. Then, the user uses the locking ring to lock the position where the wire is inserted into the wire entry hole, and aligns the upper cover with the open end of the battery box and covers the battery box. After the cover is closed, the user passes the fixing bolt through the fixing hole on the upper cover and screws it with the fixing column to fix the upper cover. Then, the user plugs the second waterproof connector connected to the electrical components inside the converter housing into the first waterproof connector. The large battery and the small battery can power the electrical components inside the converter housing. After the connection is completed, the user embeds the second waterproof connector and the first waterproof connector into the inner cavity of the accommodating cavity opened on the back of the battery box, and fixes the battery box on the converter housing to complete the installation of the battery pack. The second waterproof connector and the first waterproof connector are wrapped by the side walls of the accommodating cavity and the side walls of the converter housing to protect the second waterproof connector and the first waterproof connector, thereby avoiding as much as possible the problem that the existing battery pack cannot effectively seal and protect the connecting wires, which may easily cause the connecting wires to age or be damaged by animals after a long time, making it inconvenient for users to use.

[0014] Optionally, a sealing gasket is provided at the connection between the wire connecting the second waterproof joint to the inside of the converter housing and the converter housing, the inner wall of the sealing gasket fits the wire, and the outer wall of the sealing gasket is embedded in the interior of the converter housing and fixedly connected to the converter housing.

[0015] By adopting the above technical scheme, in the specific implementation of the present scheme, the sealing between the second waterproof joint and the converter housing includes but is not limited to sealing with a sealing gasket, and the connection between the second waterproof joint and the converter housing can also be sealed by filling sealant, foam glue, etc.; a sealing gasket is provided to seal the connection between the wire and the converter housing, thereby improving the sealing performance of the connection between the wire and the converter housing, and avoiding rainwater from seeping into the interior of the converter housing on rainy days, which may easily cause short circuit damage to the electrical components inside the converter housing.

[0016] Optionally, a flange is provided inside the battery box, a fixing column is provided in the inner cavity of the flange, a plurality of guide plates are provided around the fixing column, and the fixing column is fixedly connected to the inner wall of the flange through the guide plates.

[0017] By adopting the above technical solution, a fixing column is provided for connecting the upper cover, and a guide plate is provided for guiding, so that the user can install the battery box in a suitable position of the converter housing through the guide plate.

[0018] Optionally, a first ultrasonic welding groove is provided on the top of the flange, a second ultrasonic welding groove is provided on the top of the battery box, and a first ultrasonic welding rib aligned with the first ultrasonic welding groove and a second ultrasonic welding rib aligned with the second ultrasonic welding groove are welded on one side of the upper cover close to the battery box.

[0019] By adopting the above technical scheme, in the specific implementation of the present scheme, the sealing between the battery box and the upper cover includes but is not limited to the use of ultrasonic welding grooves and ultrasonic welding ribs for sealing, and can also be sealed by using a traditional sealing groove, a sealing ring, and then tightening the screws for sealing; when the upper cover is closed on the open end of the battery box, the first ultrasonic welding rib is just embedded in the first ultrasonic welding groove, and the second ultrasonic welding rib is just embedded in the second ultrasonic welding groove, which greatly improves the sealing performance of the upper cover to the open end of the battery box after welding.

[0020] Optionally, a wiring groove is opened on the bottom wall of the accommodating cavity, and the second waterproof connector passes through the bottom wall of the accommodating cavity through the wiring groove and is electrically connected to the first waterproof connector embedded in the accommodating cavity.

[0021] By adopting the above technical solution, a wiring groove is set so that the second waterproof connector passes through the bottom wall of the accommodating cavity through the wiring groove and is embedded in the accommodating cavity. The second waterproof connector and the first waterproof connector are wrapped by the side walls of the accommodating cavity and the side walls of the converter housing to protect them.

[0022] Optionally, a locking ring is embedded in one end of the wire inlet hole close to the converter housing, and a contraction arc surface for converging the wires is provided in an inner cavity of the locking ring.

[0023] By adopting the above technical scheme, in the specific implementation of the present scheme, the wire fixing structure includes but is not limited to the locking ring 18, and an external cable tie or other cable tie structure can also be used to bundle and lock the wires; a locking ring is provided to lock the wires passing through the inner cavity of the wire entry hole to prevent the wires from being separated from the battery when being pulled, and a contraction arc surface is provided to bundle multiple wires.

[0024] Optionally, a fixing hole opposite to the fixing column is opened on the upper cover, a fixing bolt is passed through the inner cavity of the fixing hole, the fixing bolt passes through the fixing hole and is screwed to the fixing column, and a blind cover is embedded in the outside of the fixing hole.

[0025] By adopting the above technical solution, when the user closes the upper cover on the open end of the battery box, the fixing bolt can be passed through the fixing hole and then screwed into the inside of the fixing column to fix the upper cover. The screw connection method is not only stable, but also convenient for users to install and disassemble.

[0026] In summary, the beneficial effects of this application are as follows:

[0027] 1. The present application adopts the coordination setting between the second waterproof connector, the wire entry hole, the accommodating cavity and the first waterproof connector. The second waterproof connector is connected to the electrical components inside the converter housing through a wire. The first waterproof connector is electrically connected to the battery inside the battery box after the wire passes through the wire entry hole. When installing the battery box, the second waterproof connector and the first waterproof connector are plugged in and embedded in the accommodating cavity. The second waterproof connector and the first waterproof connector are protected by wrapping the side wall of the accommodating cavity with the side wall of the converter housing. The problem that the existing battery pack cannot effectively seal and protect the connecting wires, which may cause the connecting wires to age or be damaged by animals after a long time, making it inconvenient for users to use, is avoided as much as possible.

[0028] 2. The first ultrasonic welding groove and the second ultrasonic welding groove are respectively provided on the opening end and the flange of the battery box. The first ultrasonic welding rib and the second ultrasonic welding rib are welded on the side of the upper cover close to the battery box and are aligned with the first ultrasonic welding groove. When the upper cover is closed on the battery box, the first ultrasonic welding rib and the second ultrasonic welding rib are respectively embedded in the first ultrasonic welding groove and the second ultrasonic welding groove to seal the connection between the upper cover and the battery box, thereby greatly improving the sealing effect of the battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the overall three-dimensional structure diagram of this application;

[0030] Figure 2 It is a schematic diagram of the internal structure of the battery box of this application;

[0031] Figure 3 It is a schematic diagram of the connection structure between the battery box and the battery of the present application;

[0032] Figure 4 It is a schematic diagram of the back structure of the battery box of this application;

[0033] Figure 5 This is a schematic diagram of the connection structure between the back of the battery box and the first waterproof connector of the present application;

[0034] Figure 6 It is a schematic diagram of the connection structure between the converter housing and the second waterproof connector of the present application;

[0035] Figure 7 It is a schematic diagram of the front structure of the upper cover of this application;

[0036] Figure 8 It is a schematic diagram of the back structure of the upper cover of this application.

[0037] Explanation of the reference numerals: 1. Converter housing; 2. Second waterproof joint; 3. Sealing gasket; 4. Battery box; 5. Cavity; 6. Wire inlet hole; 7. Flange; 8. Fixing column; 9. Large battery; 10. Isolation column; 11. Small battery; 12. First ultrasonic welding groove; 13. Second ultrasonic welding groove; 14. Accommodating cavity; 15. Wiring groove; 16. Guide plate; 17. First waterproof joint; 18. Locking ring; 19. Contraction arc surface; 20. Upper cover; 21. Fixing hole; 22. First ultrasonic welding rib; 23. Second ultrasonic welding rib; 24. Fixing bolt; 25. Cover. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-8 This application is described in further detail.

[0039] See also Figure 1-3 The external lithium battery pack of the electromagnetic water meter includes a converter housing 1, a battery pack body is fixedly connected to the side wall of the converter housing 1, the battery pack body includes a battery box 4 with connection and protection functions, a cavity 5 is provided inside the battery box 4, and a battery is installed inside the cavity 5.

[0040] Reference Figure 3 The battery includes a plurality of large batteries 9 installed inside a cavity 5 and a small battery 11 installed between the large batteries 9. An isolation column 10 is fixedly connected to the inner wall of the cavity 5 between adjacent large batteries 9. The isolation column 10 separates the adjacent large batteries 9 to facilitate heat dissipation of the large batteries 9.

[0041] Reference Figure 5 and Figure 6The battery is electrically connected to the electrical components inside the converter housing 1 through an electrical connector, so that the battery can supply power to the electrical components inside the converter housing 1.

[0042] Reference Figure 1 and Figure 7 The battery pack body also includes an upper cover 20 installed on the open end of the battery box 4. The upper cover 20 is provided to seal the open end of the battery box 4 and form a closed structure together with the battery box 4 to protect the internal components of the battery box 4.

[0043] Reference Figure 4 and Figure 5 A accommodating cavity 14 is provided on a side wall of the battery box 4 close to the converter housing 1. The electrical connector includes a wire entry hole 6 provided on the inner wall of the accommodating cavity 14. The wire entry hole 6 passes through the battery box 4 and is connected to the inner cavity of the battery box 4. A wire is passed through the inner cavity of the wire entry hole 6. One end of the wire located in the inner cavity of the battery box 4 is electrically connected to the battery. The first waterproof connector 17 is fixedly connected to one end of the wire located outside the battery box 4.

[0044] Reference Figure 6 , the electrical connector also includes a second waterproof connector 2 electrically connected to the electrical components inside the converter housing 1 through a wire, and the second waterproof connector 2 is plugged into the first waterproof connector 17, so that the battery can supply power to the electrical components inside the converter housing 1. The second waterproof connector 2 and the first waterproof connector 17 are embedded in the accommodating cavity 14. The second waterproof connector 2 and the first waterproof connector 17 are accommodated by the accommodating cavity 14, and the opening of the accommodating cavity 14 is sealed in cooperation with the side wall of the converter housing 1 on the side close to the battery box 4, so as to protect the second waterproof connector 2 and the first waterproof connector 17. The first waterproof connector 17 matches the second waterproof connector 2, and the two can be plugged in. For example, the first waterproof connector is a male waterproof connector, and the second waterproof connector is a female waterproof connector. For another example, the first waterproof connector is a female waterproof connector, and the second waterproof connector is a male waterproof connector.

[0045] Reference Figure 6 , a sealing gasket 3 is provided at the connection between the wire connected to the inside of the converter housing 1 and the converter housing 1, the inner wall of the sealing gasket 3 is in contact with the wire, and the outer wall of the sealing gasket 3 is embedded in the converter housing 1 and fixedly connected to the converter housing 1. In the specific implementation of this scheme, the sealing between the second waterproof joint 2 and the converter housing 1 includes but is not limited to sealing with the sealing gasket 3, and the connection between the second waterproof joint 2 and the converter housing 1 can also be sealed by filling the sealing glue, foam glue, etc.; the sealing gasket 3 is provided to seal the connection between the wire and the converter housing 1, improve the sealing performance of the connection between the wire and the converter housing 1, and try to avoid rainwater from penetrating into the converter housing 1 on rainy days, which may easily cause the problem of short circuit damage to the electrical components inside the converter housing 1.

[0046] Reference Figure 2 The battery box 4 is provided with a flange 7, a fixing column 8 is provided in the inner cavity of the flange 7, a plurality of guide plates 16 are provided around the fixing column 8, and the fixing column 8 is fixedly connected to the inner wall of the flange 7 through the guide plates 16. The fixing column 8 is provided for connecting the upper cover 20, and the guide plates 16 are provided for guiding, so that the user can install the battery box 4 in a suitable position of the converter housing 1 through the guide plates 16.

[0047] Reference Figure 2 and Figure 8 , a first ultrasonic welding groove 12 is provided on the top of the flange 7, a second ultrasonic welding groove 13 is provided on the top of the battery box 4, and a first ultrasonic welding rib 22 aligned with the first ultrasonic welding groove 12 and a second ultrasonic welding rib 23 aligned with the second ultrasonic welding groove 13 are welded on the side of the upper cover 20 close to the battery box 4. In the specific implementation of the present scheme, the sealing between the battery box 4 and the upper cover 20 includes but is not limited to the use of ultrasonic welding grooves and ultrasonic welding ribs for sealing, and can also be sealed by the traditional method of sealing grooves and sealing rings and then tightening with screws; when the upper cover 20 is closed on the open end of the battery box 4, the first ultrasonic welding rib 22 is just embedded in the first ultrasonic welding groove 12, and the second ultrasonic welding rib 23 is just embedded in the second ultrasonic welding groove 13, and the sealing performance of the upper cover 20 to the open end of the battery box 4 is greatly improved after welding.

[0048] Reference Figure 4 A wiring groove 15 is provided on the bottom wall of the accommodating cavity 14, and the second waterproof connector 2 passes through the bottom wall of the accommodating cavity 14 through the wiring groove 15 and is electrically connected to the first waterproof connector 17 embedded in the accommodating cavity 14. The wiring groove 15 is provided so that the second waterproof connector 2 passes through the bottom wall of the accommodating cavity 14 through the wiring groove 15 and is embedded in the accommodating cavity 14. The side walls of the accommodating cavity 14 cooperate with the side walls of the converter housing 1 to wrap the second waterproof connector 2 and the first waterproof connector 17, so as to protect the second waterproof connector 2 and the first waterproof connector 17.

[0049] Refer to the figure Figure 4 A locking ring 18 is embedded in one end of the wire inlet 6 near the converter housing 1, and a contraction arc surface 19 for bundling the wires is provided in the inner cavity of the locking ring 18. In the specific implementation of this scheme, the wire fixing structure includes but is not limited to the locking ring 18, and an external wire bundler or other wire bundle structure can also be used to bundle and lock the wires; the locking ring 18 is provided to lock the wires passing through the inner cavity of the wire inlet 6 to prevent the wires from being separated from the battery when being pulled, and the contraction arc surface 19 is provided to bundle multiple wires.

[0050] Reference Figure 1 and Figure 7 The upper cover 20 is provided with a fixing hole 21 which is opposite to the fixing column 8. A fixing bolt 24 is passed through the inner cavity of the fixing hole 21. The fixing bolt 24 passes through the fixing hole 21 and is screwed to the fixing column 8. A cover 25 is embedded in the outer part of the fixing hole 21. When the user covers the upper cover 20 on the open end of the battery box 4, the fixing bolt 24 can pass through the fixing hole 21 and be screwed to the inside of the fixing column 8, thereby fixing the upper cover 20. The screw connection method is not only stable, but also convenient for users to install and disassemble.

[0051] The implementation principle of the present application is as follows: when in use, the user first installs the large battery 9 and the small battery 11 at the set position inside the battery box 4, and then inserts the wire connected to the first waterproof connector 17 into the battery box 4 from the wire entry hole 6 on the back of the battery box 4, and electrically connects with the large battery 9 and the small battery 11, and then the user uses the locking ring 18 to lock the position where the wire is inserted into the wire entry hole 6, and aligns the upper cover 20 with the open end of the battery box 4 and covers the battery box 4. After the cover is closed, the user passes the fixing bolts 24 through the fixing holes 21 opened on the upper cover 20 and then screws them with the fixing columns 8 to fix the upper cover 20, and then the user plugs the second waterproof connector 2 connected to the electrical components inside the converter housing 1 into the first waterproof connector. The second waterproof connector 2 and the first waterproof connector 17 are connected to the head 17 so that the large battery 9 and the small battery 11 can supply power to the electrical components inside the converter housing 1. After the connection is completed, the user embeds the second waterproof connector 2 and the first waterproof connector 17 into the inner cavity of the accommodating cavity 14 opened on the back of the battery box 4, and fixes the battery box 4 on the converter housing 1 to complete the installation of the battery pack. The second waterproof connector 2 and the first waterproof connector 17 are wrapped by the side walls of the accommodating cavity 14 and the side walls of the converter housing 1 to protect the second waterproof connector 2 and the first waterproof connector 17, thereby avoiding the problem that the existing battery pack cannot effectively seal and protect the connecting wires, which may easily cause the connecting wires to age or be damaged by animals after a long time, making it inconvenient for users to use.

[0052] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An external lithium battery pack for an electromagnetic water meter, comprising a converter housing (1), a battery pack body mounted on a side wall of the converter housing (1), the battery pack body comprising a battery box (4), a cavity (5) being provided inside the battery box (4), a battery being mounted inside the cavity (5), the battery being electrically connected to an electrical component inside the converter housing (1) via an electrical connector, the battery pack body further comprising an upper cover (20) mounted on an open end of the battery box (4), characterized in that: A receiving cavity (14) is provided on a side wall of the battery box (4) close to the converter housing (1); the electrical connector comprises a wire entry hole (6) provided on the inner wall of the receiving cavity (14); the wire entry hole (6) penetrates the battery box (4) and is in communication with the inner cavity of the battery box (4); a wire is passed through the inner cavity of the wire entry hole (6); one end of the wire located in the inner cavity of the battery box (4) is electrically connected to the battery; one end of the wire located outside the battery box (4) is fixedly connected to a first waterproof connector (17); the electrical connector further comprises a second waterproof connector (2) electrically connected to an electrical component inside the converter housing (1) through the wire; the first waterproof connector (17) and the second waterproof connector (2) match each other; the second waterproof connector (2) and the first waterproof connector (17) are plugged into each other; the second waterproof connector (2) and the first waterproof connector (17) are embedded in the receiving cavity (14).

2. The external lithium battery pack of the electromagnetic water meter according to claim 1, characterized in that: A sealing gasket (3) is provided at the connection between the conductor connected to the inside of the converter housing (1) and the converter housing (1); the inner wall of the sealing gasket (3) fits the conductor, and the outer wall of the sealing gasket (3) is embedded in the inside of the converter housing (1) and fixedly connected to the converter housing (1).

3. The external lithium battery pack of the electromagnetic water meter according to claim 1, characterized in that: A flange (7) is provided inside the battery box (4), a fixing column (8) is provided in the inner cavity of the flange (7), a plurality of guide plates (16) are provided around the fixing column (8), and the fixing column (8) is fixedly connected to the inner wall of the flange (7) via the guide plates (16).

4. The external lithium battery pack of the electromagnetic water meter according to claim 3, characterized in that: The flange (7) is provided with a first ultrasonic welding groove (12) on the top, the battery box (4) is provided with a second ultrasonic welding groove (13) on the top, and a first ultrasonic welding rib (22) positioned opposite to the first ultrasonic welding groove (12) and a second ultrasonic welding rib (23) positioned opposite to the second ultrasonic welding groove (13) are welded on a side of the upper cover (20) close to the battery box (4).

5. The external lithium battery pack of the electromagnetic water meter according to claim 1, characterized in that: A wiring groove (15) is provided on the bottom wall of the accommodating cavity (14), and the second waterproof connector (2) passes through the bottom wall of the accommodating cavity (14) through the wiring groove (15) and is electrically connected to the first waterproof connector (17) embedded in the accommodating cavity (14).

6. The external lithium battery pack of the electromagnetic water meter according to claim 5, characterized in that: A locking ring (18) is embedded in one end of the wire entry hole (6) close to the converter housing (1), and a contraction arc surface (19) for converging wires is provided in the inner cavity of the locking ring (18).

7. The external lithium battery pack of the electromagnetic water meter according to claim 3, characterized in that: The upper cover (20) is provided with a fixing hole (21) which is opposite to the fixing column (8); a fixing bolt (24) is passed through the inner cavity of the fixing hole (21); the fixing bolt (24) passes through the fixing hole (21) and is screwed to the fixing column (8); a blind cover (25) is embedded in the outside of the fixing hole (21).

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